EP1722351B1 - Affichage organique el et procede de commande d'affichage organique el - Google Patents

Affichage organique el et procede de commande d'affichage organique el Download PDF

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Publication number
EP1722351B1
EP1722351B1 EP05709604A EP05709604A EP1722351B1 EP 1722351 B1 EP1722351 B1 EP 1722351B1 EP 05709604 A EP05709604 A EP 05709604A EP 05709604 A EP05709604 A EP 05709604A EP 1722351 B1 EP1722351 B1 EP 1722351B1
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EP
European Patent Office
Prior art keywords
scanning
lines
potential
organic
drive
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Expired - Fee Related
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EP05709604A
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German (de)
English (en)
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EP1722351A1 (fr
EP1722351A4 (fr
Inventor
Junichi Maruyama
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3216—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using a passive matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3266—Details of drivers for scan electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0223—Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/041—Temperature compensation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant

Definitions

  • the present invention relates to an organic EL display device having a dot-matrix type organic EL panel, which includes a plurality of anode lines and a plurality of cathode lines, and to a method for driving the organic EL display device.
  • the organic EL display device includes an organic EL panel 1, a cathode drive circuit 2, an anode drive circuit 3, a control unit 4, and a reset circuit 5 (as referred to Fig. 6 ).
  • pixels E11 to Emn are arranged in a matrix state. These pixels E11 to Emn are disposed at intersections between a plurality of scanning lines S1 to Sm in the longitudinal direction and a plurality of drive lines D1 to Dn in the transverse direction orthogonal to the scanning lines S1 to Sm.
  • the pixels E11 to Emn are expressed by an equivalent circuit (as referred to Fig. 7 ) composed of a diode and a condenser arranged in parallel.
  • the pixels E11 to Emn to luminesce are shown with only diodes, and the pixels E11 to Emn not to luminesce are shown with only condensers in Fig. 8 and Fig. 9 .
  • the cathode drive circuit 2 is provided with a plurality of scanning switches 21 to 2m corresponding to the individual scanning lines S1 to Sm. On the basis of the control signals of the control unit 4, the scanning switches 21 to 2m connect the individual scanning lines S1 to Sm selectively to the unselected potential Vb or the earth potential (0V).
  • the anode drive circuit 3 includes constant current sources 30 for feeding drive currents individually to the individual drive lines D1 to Dn, and drive switches 31 to 3n capable of connecting the individual drive currents from the constant current sources 30 to the individual drive lines D1 to Dn. The switching of each of the drive switches 31 to 3n is determined on the basis of the control signal from the control unit 4.
  • the control unit 4 outputs the control signals individually to the cathode drive circuit 2 and the anode drive circuit 3, and selectively turn ON/OFF the scanning switches 21 to 2m and the drive switches 31 to 3n corresponding to the scanning lines S1 to Sm and the drive lines D1 to Dn necessary for causing the pixels E11 to Emn to luminesce.
  • the reset circuit 5 is composed of a plurality of reset switches 50 individually connected with the drive lines D1 to Dn. These reset switches 50 connect the drive lines D1 to Dn to the earth potential, while next scanning lines S1 to Sm are being selected after arbitrary scanning lines S1 to Sm were selected by the scanning switches 21 to 2m, thereby to release the charges from the pixels E11 to Emn.
  • the period, for which the electric charge stored in the pixels E11 to Emn is released by the reset circuit 5, is called the "reset period". For this reset period, not only the drive lines D1 to Dn but also the scanning lines S1 to Sm are connected to the earth potential.
  • the control circuit 4 turns ON the scanning switches 21 to 2m sequentially to select the scanning lines S1 to Sm sequentially, and turns ON/OFF the individual drive switches 31 to 3n to display characters and drawings on the organic EL panel 1.
  • the pixels E11 to Emn have different luminous brightnesses in dependence upon the number of luminous pixels on the scanning lines S1 to Sm selected.
  • the pixels E21 to E2n luminesce in high brightness.
  • the problem is that the brightness becomes lower than that of the case, in which all the pixels E21 to E2n are caused to luminesce. The reason for this problem is described in the following.
  • the pixels E12 to E1n, E32 to E2n, - -, and Em2 to Emn on the scanning lines S1, S2 to Sm in the unselected states have large capacities as condensers so that the electric current IS2 to flow into the scanning line S2 is relatively small.
  • the rise of the luminous waveform becomes so blunt as to reduce the luminous brightness.
  • US 2003/0184237 A1 discloses a drive method for an organic EL display device in which a reverse bias voltage created by a reverse bias voltage creation circuit or a peak current being precharged is controlled by selectively grounding control terminals based on a dimmer or gradation control.
  • US 2003/0122750 A1 discloses a display device which includes a control circuit that adjusts the voltage between the anode and the cathode of light-emitting elements in accordance with the number of light-emitting elements that emit light simultaneously.
  • the present invention has been conceived in view of those problems, and contemplates to provide an organic EL display device, in which the luminous brightness of pixels is not made different by the number of pixels to luminesce on the scanning line selected, and a method for driving the display device.
  • the present invention provides an organic EL display device and a drive method for an organic EL display device as recited in the claims.
  • the resistance of scanning switch means corresponding to the scanning line unselected is properly changed so that the dispersion of the luminous brightness of the pixels can be reduced.
  • the organic EL display device is configured to include an organic EL panel 1, a cathode drive circuit 2, an anode drive circuit 7, a control unit 8 (or control means), and a reset circuit 5.
  • pixels E11 to Emn are arranged in a matrix state. These pixels E11 to Emn are disposed at intersections between a plurality of scanning lines S1 to Sm in the longitudinal direction and a plurality of drive lines D1 to Dn in the transverse direction orthogonal to the scanning lines S1 to Sm.
  • the cathode drive circuit 2 is provided with a plurality of scanning switches 21 to 2m (or scanning switch means) corresponding to the individual scanning lines S1 to Sm.
  • Each of the scanning switches 21 to 2m is configured (as referred to Fig. 2 ) to include a first transistor Tr1 for connecting the scanning lines S1 to Sm with the earth potential (or the first potential), and a second transistor Tr2 for connecting the scanning lines S1 to Sm with an unselected potential Vb (or the second potential).
  • the first transistor Tr1 is the N-channel type transistor
  • the second transistor Tr2 is the P-channel type transistor.
  • the individual scanning switches 21 to 2m are shown to have one of the first transistor Tr1 and the second transistor Tr2.
  • the first transistor Tr1 and the second transistor Tr2 are composed of gates Ga and Gb, sources Sa and Sb and drains Da and Db, respectively.
  • the first transistor Tr1 has its source Sa connected with the earth potential and its drain Da connected with the scanning lines S1 to Sm.
  • the first transistor Tr1 connects, based on the drive signal inputted from the gate Ga, the scanning lines S1 to Sm selected, to the earth potential.
  • the second transistor Tr2 has its source Sb connected with the unselected potential Vb and its drain Db connected with the scanning lines S1 to Sm.
  • the second transistor Tr2 connects, based on the drive signal inputted from the gate Gb, the scanning lines S1 to Sm unselected, with the unselected potential Vb.
  • the scanning lines S1 to Sm are sequentially brought into the selected state by the scanning switches 21 to 2m.
  • the reset circuit 5 is composed of a plurality of reset switches 50 individually connected with the drive lines D1 to Dn. These reset switches 50 connect the drive lines D1 to Dn to the earth potential, while next scanning lines S1 to Sm are being selected after arbitrary scanning lines S1 to Sm were selected by the scanning switches 21 to 2m, thereby to release the charges from the pixels E11 to Emn.
  • the anode drive circuit 7 includes constant current sources 70 (or drive current sources) for feeding drive currents individually to the individual drive lines D1 to Dn, and drive switches 71 to 7n capable of connecting, based on the control signals from the control unit 8, the individual drive lines D1 to Dn selectively to the constant current sources 70 or the earth potential (or an OFF potential).
  • constant current sources 70 or drive current sources
  • drive switches 71 to 7n capable of connecting, based on the control signals from the control unit 8, the individual drive lines D1 to Dn selectively to the constant current sources 70 or the earth potential (or an OFF potential).
  • the control unit 8 is constituted of a display controller for performing, when it receives running information of the vehicle from various sensors, a predetermined processing to display the various kinds of information such as the vehicle speed, the engine speed or the fuel residue in the organic EL panel 1.
  • the control unit 8 outputs control signals individually to the cathode drive circuit 2 and the anode drive circuit 7, so that the scanning switches 21 to 2m and the drive switches 71 to 7n corresponding to the scanning lines S1 to Sm and the drive lines D1 to Dn necessary for causing the pixels E11 to Emn to luminesce are selectively turned ON/OFF to display the predetermined information on the organic EL panel 1.
  • the control unit 8 is provided with a memory unit 8a such as an EEPROM having voltage data VGS1 to VGSn stored therein.
  • the voltage data VGS1 to VGSn is at the voltage level as the drive signal to be applied to the gate Gb of the transistor Tr2.
  • the voltage level indicates the voltage (or the bias voltage) between the source Sb and the gate Gb of the transistor Tr2.
  • the voltage data VGS1 to VGSn corresponds (as referred to Fig. 3 ) to the numbers 1 to n of the drive switches 71 to 7n to be turned ON.
  • the control unit 8 reads the voltage data VGS1 to VGSn from the memory unit 8a in accordance with the numbers 1 to n of the pixels to luminesce on the scanning lines S1 to Sm selected, and outputs the drive signals based on the voltage data VGS1 to VGSn read, to the transistor Tr2 of the scanning switches 21 to 2m corresponding to the scanning lines S1 to Sm unselected.
  • the drive signals based on the voltage data VGSn are outputted to the transistor Tr2 of the scanning switches 21 and 23 to 2m corresponding to the scanning lines S1 and S3 to Sm unselected.
  • the drive signal based on the voltage data VGS1 is outputted to the transistor Tr2 of the scanning switches 21 and 23 to 2m corresponding to the scanning lines S1 and S3 to Sm unselected.
  • Fig. 4 and Fig. 5 show a second mode of embodiment.
  • This second mode of embodiment is different from the first mode of embodiment only in a temperature sensor 10 and a memory unit 8b.
  • the remaining components are identical to those of the first mode of embodiment, and the detailed description is omitted by designating the components by the common reference numerals.
  • the temperature sensor 10 detects the temperature of the organic EL panel 1, and outputs a temperature signal T or analog data to the control unit 8.
  • the temperature sensor 10 is made of a temperature detecting element such as a thermistor, and may be either adhered to the organic EL panel 1 or arranged at a predetermined spacing from the organic EL panel 1 thereby to detect the temperature of the organic EL panel 1 indirectly.
  • the control unit 8 is provided with the not-shown A/D converter (or the temperature detecting means), by which the aforementioned temperature signal T is converted into digital data such as temperature data t01 to t64.
  • the control unit 8 is provided with the memory unit 8b, in which the voltage data VGS101 to VGSn64 at the voltage level to be applied to the gate Gb of the transistor Tr2 is stored.
  • the voltage data VGS101 to VGSn64 correspond (as referred to Fig. 5 ) to the numbers 1 to n of the drive switches 71 to 7n to be turned ON and the temperature data t01 to t64.
  • the control unit 8 reads the voltage data VGS101 to VGSn64 from the memory unit 8b in accordance with the numbers 1 to n of the pixels to luminesce on the scanning lines S1 to Sm selected and the temperature data t01 to t64, and outputs the drive signals based on the voltage data VGS1 to VGSn read, to the transistor Tr2 of the scanning switches 21 to 2m.
  • the temperature data obtained on the basis of the temperature signal T outputted from the temperature sensor 10 is "t03" and when the number of pixels to luminesce on the scanning line S2 is n, the drive signals based on the voltage data VGSn03 are outputted.
  • the drive signal based on the voltage data VGS103 is outputted.
  • the voltage data VGS1 to VGSn and VGS101 to VGSn64 are read out from the memory unit 8a or 8b, and the drive signals based on the read voltage data VGS1 to VGSn and VGS101 to VGSn64 can be outputted to the transistor Tr2 of the scanning switches 21 to 2m.
  • the drive signals based on the read voltage data VGS1 to VGSn and VGS101 to VGSn64 can be outputted to the transistor Tr2 of the scanning switches 21 to 2m.
  • the voltage level to be applied to the transistor Tr2 is changed at n-stages in accordance with the numbers 1 to n of the pixels to luminesce on the scanning lines S1 to Sm selected.
  • similar effects can be expected by changing the voltage level in at least two stages.
  • the present invention is suited for an organic EL display device having a dot-matrix type organic EL panel, which includes a plurality of anode lines and a plurality of cathode lines.

Claims (8)

  1. Dispositif d'affichage organique EL comprenant :
    un panneau organique EL à matrice de points (1) ayant une pluralité de lignes de balayage (S1-Sm) et une pluralité de lignes de commande (D1-Dn) ;
    un commutateur de balayage (21-2m) destiné à relier chacune desdites lignes de balayage (S1-Sm) librement à un premier potentiel ou un second potentiel, dans lequel une connexion entre chacune desdites lignes de balayage (S1-Sm) et ledit premier potentiel correspond à un état sélectionné, et une connexion entre chacune desdites lignes de balayage (S1-Sm) et ledit second potentiel correspond à un état non sélectionné ;
    un commutateur de commande (71-7n) destiné à relier chacune desdites lignes de commande (D1-Dn) librement à une source de courant de commande correspondante (70) ou un potentiel de coupure ; et
    un moyen de commande (8) destiné à ce que ledit commutateur de balayage (21-2m) connecte lesdites lignes de balayage (S1-Sm) audit premier potentiel afin de sélectionner lesdites lignes de balayage (S1-Sm) séquentiellement, et contrôle l'état connecté dudit commutateur de commande (71-7n), caractérisé en ce que :
    ledit moyen de commande (8) change, selon le nombre desdites lignes de commande (D1-Dn) à connecter à leur source de courant de commande correspondante (70) dans une ligne de balayage sélectionnée (S1-Sm), la résistance de chaque commutateur de balayage (21-2m) pour chaque ligne de balayage non sélectionnée (S1-Sm) reliée entre sa ligne de balayage correspondante (S1-Sm) et ledit second potentiel ; ladite résistance pouvant être sélectionnée parmi au moins deux valeurs différentes.
  2. Dispositif d'affichage organique EL selon la revendication 1, caractérisé en ce que ledit commutateur de balayage (21-2m) comprend un premier transistor (Tr1) destiné à relier lesdites lignes de balayage (S1-Sm) audit premier potentiel, et un second transistor (Tr2) destiné à relier lesdites lignes de balayage (S1-Sm) audit second potentiel.
  3. Dispositif d'affichage organique EL selon la revendication 2, caractérisé en ce que ledit moyen de commande (8) change, selon le nombre desdites lignes de commande (D1-Dn) à connecter à leur source de courant de commande correspondante (70) dans une ligne de balayage sélectionnée (S1-Sm), la tension de polarisation de chaque second transistor (Tr2) pour chaque ligne de balayage non sélectionnée (S1-Sm) reliée entre sa ligne de balayage correspondante (S1-Sm) et ledit second potentiel, afin de changer ainsi ladite résistance.
  4. Dispositif d'affichage organique EL selon la revendication 1, caractérisé en ce qu'il comprend un moyen de détection de la température (10) destiné à détecter la température dudit panneau organique EL (1) afin de transmettre des données de température.
  5. Dispositif d'affichage organique EL selon la revendication 4, caractérisé en ce que ledit moyen de commande (8) change, selon le nombre desdites lignes de commande (D1-Dn) à connecter à leur source de courant de commande correspondante (70) dans une ligne de balayage sélectionnée (S1-Sm) et lesdites données de température, ladite résistance de chaque commutateur de balayage (21-2m) relié audit second potentiel.
  6. Procédé de commande destiné à un dispositif d'affichage organique EL, comprenant :
    le fait de relier une pluralité de lignes de balayage (S1-Sm) individuellement à l'un d'un premier potentiel et d'un second potentiel, où une connexion entre chacune desdites lignes de balayage (S1-Sm) et ledit premier potentiel correspond à un état sélectionné, et une connexion entre chacune desdites lignes de balayage (S1-Sm) et ledit second potentiel correspond à un état non sélectionné ; et
    le fait de relier une pluralité de lignes de commande (D1-Dn) individuellement à une source de courant de commande correspondante (70) ou un potentiel de coupure, caractérisé en ce que :
    selon le nombre desdites lignes de commande (D1-Dn) à connecter à leur source de courant de commande correspondante (70) dans une ligne de balayage sélectionnée (S1-Sm), la résistance de chaque commutateur de balayage (21-2m) pour chaque ligne de balayage non sélectionnée (S1-Sm) reliée entre sa ligne de balayage correspondante (S1-Sm) et ledit second potentiel est changée par un moyen de commande (8) en l'une d'au moins deux valeurs différentes.
  7. Procédé de commande de dispositif d'affichage organique EL selon la revendication 6, caractérisé en ce que :
    ledit commutateur de balayage (21-2m) comprend un premier transistor (Tr1) destiné à relier lesdites lignes de balayage (S1-Sm) audit premier potentiel, et un second transistor (Tr2) destiné à relier lesdites lignes de balayage (S1-Sm) audit second potentiel ; et
    en ce que ledit moyen de commande (8) change, selon le nombre desdites lignes de commande (D1-Dn) à connecter à leur source de courant de commande correspondante (70) dans une ligne de balayage sélectionnée, la tension de polarisation de chaque second transistor (Tr2) pour chaque ligne de balayage non sélectionnée (S1-Sm) reliée entre sa ligne de balayage correspondante (S1-Sm) et ledit second potentiel, de façon à changer ainsi ladite résistance.
  8. Procédé de commande de dispositif d'affichage organique EL selon la revendication 6, caractérisé en ce que, selon le nombre desdites lignes de commande (D1-Dn) à connecter à leur source de courant de commande correspondante (70) dans une ligne de balayage sélectionnée (S1-Sm) et la température dudit panneau organique EL (1), la résistance de chaque commutateur de balayage (21-2m) relié audit second potentiel est changée.
EP05709604A 2004-02-27 2005-02-02 Affichage organique el et procede de commande d'affichage organique el Expired - Fee Related EP1722351B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004053625A JP3769755B2 (ja) 2004-02-27 2004-02-27 有機ｅｌ表示装置及びその駆動方法
PCT/JP2005/001483 WO2005083665A1 (fr) 2004-02-27 2005-02-02 Affichage organique el et procédé de commande d’affichage organique el

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EP1722351A1 EP1722351A1 (fr) 2006-11-15
EP1722351A4 EP1722351A4 (fr) 2007-05-09
EP1722351B1 true EP1722351B1 (fr) 2008-10-01

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US (1) US7649512B2 (fr)
EP (1) EP1722351B1 (fr)
JP (1) JP3769755B2 (fr)
DE (1) DE602005010053D1 (fr)
WO (1) WO2005083665A1 (fr)

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CA2556961A1 (fr) * 2006-08-15 2008-02-15 Ignis Innovation Inc. Technique de compensation de diodes electroluminescentes organiques basee sur leur capacite
WO2009017156A1 (fr) 2007-07-30 2009-02-05 Kyocera Corporation Dispositif d'affichage d'image, procédé de commande de dispositif d'affichage d'image et système de réglage de dispositif d'affichage d'image
WO2018156305A2 (fr) * 2017-02-24 2018-08-30 Gentex Corporation Authentification biométrique à deux facteurs pour auto

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JP3472016B2 (ja) 1996-02-22 2003-12-02 キヤノン株式会社 マルチ電子ビーム源の駆動回路及びそれを用いた画像形成装置
JP3620985B2 (ja) 1999-01-11 2005-02-16 パイオニア株式会社 容量性発光素子ディスプレイ装置及びその駆動方法
JP4873677B2 (ja) 2001-09-06 2012-02-08 東北パイオニア株式会社 発光表示パネルの駆動装置
JP3752596B2 (ja) 2001-11-16 2006-03-08 日本精機株式会社 有機ｅｌパネルの駆動回路
JP3904450B2 (ja) 2001-12-28 2007-04-11 沖電気工業株式会社 駆動回路
JP3854182B2 (ja) * 2002-03-28 2006-12-06 東北パイオニア株式会社 発光表示パネルの駆動方法および有機ｅｌ表示装置
JP3773185B2 (ja) * 2002-03-28 2006-05-10 東北パイオニア株式会社 発光表示パネルの駆動装置および駆動方法
JP2004272213A (ja) * 2003-02-17 2004-09-30 Hitachi Ltd 画像表示装置

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EP1722351A1 (fr) 2006-11-15
US7649512B2 (en) 2010-01-19
US20070171153A1 (en) 2007-07-26
WO2005083665A1 (fr) 2005-09-09
JP3769755B2 (ja) 2006-04-26
EP1722351A4 (fr) 2007-05-09
JP2005242115A (ja) 2005-09-08
DE602005010053D1 (de) 2008-11-13

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